Home / 1,127.21-1,689.65-433.69

Finding the Fourth Proportional to 1,127.21, 1,689.65 and 433.69

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Solution

The fourth proportional to 1,127.21, 1,689.65 and 433.69 is: 650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.21 : 1,689.65 = 433.69 : x
  2. Step 2: Convert to fraction form
    1,127.21/1,689.65 = 433.69/x
  3. Step 3: Cross multiply
    1,127.21x = 1,689.65 × 433.69
  4. Step 4: Simplify right side
    1,127.21x = 732,784.31
  5. Step 5: Solve for x
    x = 732,784.31/1,127.21
  6. Step 6: Final answer
    x = 650.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.